Tempeeatube-actuated automatic conteol valve



April 15, 1930.

J. SLADKY ET AL TEMPERATURE ACTUATED AUTOMATIC CONTROL VALVE Filed Oct.a, 1928 Mg (ff 6 Patented Apr. 15, 1930 if. S

ATM

JOSEPH SLADKY AND ALEXANDER C. SLADKY, OF IVIIL'W'A'UKEE, WISCONSIN,ASSIGNORS TO NATIONAL ENAMELING 82; STAIYIPING CO. INC, 015 MILKVAUKEE,WISCONSIN Application filed October 8, 1928. Serial No. 311,230.

1o 1y heated, with consequent flooding and some times with seriousresults.

This invention is designed to overcome the defects noted above,andobjects of this invention are to provide a temperature actuatedautomatic control valve which is applicable to the control of gasolinestoves and to other analogous uses, and which is so made that it isnecessary to heat the generator tube and an associated member beforegasoline or other fuel can-pass to the generator and main burner, sothat there is no possible chance of flooding the burner or, in otherwords, allowing fuel to pass thereto before the generator tube has beensufficiently heated.

Further objects are to provide an automatic device which functionswithout any thought on the part of the operator, which is relativelysimple and easy to install, which is so constructed that an expansibleliquid or gas, which will hereinafter be referred to as fluid, isemployed to actuate a control valve for the fuel flow so that when asuficient temperature has been obtained, the fluid will expand andactuate the control valve to permit the passage of fuel, and which willclose the valve if the main burner goes out.

An embodiment of the invention is shown in the accompanying drawings inwhich:

The single figure is a diagrammatic view showing the device in sectionas applied to a burner. V

The burner chosen for illustration is for a gasoline or similar stove,but it is obvious that the invention is applicable to other uses,

for instance, it may be used in connection with a gas stove withoutdeparting from the spirit of this invention.

Referring to the drawing, it will be seen that a generator tube 1 ofconventional construction has been illustrated as provided with acontrol wheel 2. This tube is connected at one endto a burner 3. Theburner may be in any position desired adjacent the tube 1, but for thesake of simplicity of illustration, has been shown as indicated in thedrawing.

The other end of the generator tube 1 is connected by means of a pipe 4with the outlet port 5 of the control device. The inlet port 6 of thecontrol device is connected to a suitable source of fuel by means of thepipe 7. The ports 5 and 6 are preferably formed in a portion of thebracket 8 of the stove, as shown, and a valve stem 9 passes into thebracket and is packed by means of the packinggland 10 and the packing11. This valve is provided with a conical or other shaped end 12 whichcooperates with a valve seat formed at the port or duct 5.

The apparatus is provided with a prim ing or heating cup 18 which may besupplied with fuel in any suitable manner as by means of a pipe 14: toinitially heat the generator tube 1. The priming cup is located beneaththe tube 1, and an expansion chamber 15 or expansion member ispositioned adjacent the tube 1 so that it will also be heated by theflame from the priming cup. This tube 15 contains gas or liquid which isexpansible and which actuates a diaphragm 16. The diaphragmis carriedsealed within a casing 17 secured to the expansion member 15. Thissealing may be by means of a head 18 screw threaded into the casing andclamping the diaphragm securely in place. The'head 18 is provided withan apertured boss 19 through which a bearing plunger 20 projects. Thisplunger is provided with a head 21 on its inner end which contacts withthe diaphragm. The outer end of the plunger bears against the bracket 8.The head 18 is provided with one or more lugs 22 which are pivotallyjoined to the bracket by means of the pivot pin A spring 24 urges theentire device downwardly, such spring being interposed. between theexpansion member or chamber 15 and the bracket 8, as shown. The casing1'? is provided with a lug 25 which is connected by means of a shortlink 26 with. the upper end of the valve stem 9.

In using the device, the requisite amount of fuel is placed in thepriming cup 13 or supplied to such cup by means of the pipe 14. Thisfuel is ignited and heats the generator tube and at the same time heatsthe member 15. This'causes the diaphragm 16 to bow to the left, asviewed in the drawing, and thus forces the plunger 20 outwardly withrefer ence to the boss 19. This causes the casing and expansion memberto rock upwardly and thus draws the valve 9 upwardly away from its seatand allows fuel to pass to the generator tube and from thence to theburner.

'As long as the burner is in operation, the valve is held open, as thereis sufficient heat from the burner to continuously heat the generatortube and the member 15. However, if the burner should becomeextinguished for any cause, the fluid in the member 15 will contract,thereby closing-the fuel valve. Further, it is impossible to supply fuelto the burner until a sufficient heating of the generator tube hasoccurred, with consequent heating of the member 15.

It will be seen that the device is very simple and is easy to produceand thoroughly reliable in operation.

Although the invention has been described in considerable detail, suchdescription is intended as illustrative rather than limiting as theinvention maybe variously embodied and as the scope of such inventionis'to be determined as claimed.

We claim:

1. In a device of the class described, the combination of a burner, agenerator tube connected thereto, fuel supply means for said generatortube, a plunger valve controlling said fuel supp'lymeans,an elongatedtubular member adapted to contain an expansible fluid located adjacentsaid generator tube, a priming cup for heating said generator tube andsaid tubular member, a casing carrying said tubular member and:pivotally supported from astationary point, a bearing face adjacentsaid casing, a diaphragm mounted within said casing, and a plungermounted between said diaphragm and said bearing face, said valve beingconnected to said casing.

2. In a stove, the combination of a stationary bracket, a valve mountedwithin said bracket, fuel supply means connected tosaid valve andcontrolled thereby, a generator pipe connected to said valve, a burnerconnected to said generator pipe, a priming cup mounted below saidgenerator tube, a tubular member adapted to contain an eXpansible fluidand positioned adjacent said priming cup and said generator tube, acasing pivot ally supported from said bracket and rigidly carrying saidmember, a link connecting said casing and said valve, a diaphragmcarried within said casing, and a plunger interposed between saiddiaphragm and said bracket,

cousin.

JOSEPH SLADKY. riLEXANDER 1C. SLA'DKY.

